Öffnet in neuem Fenster Opens in a new window Öffnet externe Seite Opens an external site Öffnet externe Seite in neuem Fenster Opens an external site in a new window

Department Microstructure and Residual Stress Analysis

EDDIDAT: a graphical user interface for the analysis of energy-dispersive diffraction data


Welcome to the homepage of the analysis tool 'EDDIDAT' (Energy-Dispersive Diffraction Data Analysis Tool). EDDIDAT is a MATLAB-based graphical user interface for the convenient and versatile analysis of energy-dispersive diffraction data obtained at the laboratory X-ray sources at the HZB. The main focus of EDDIDAT up to now has been on the analysis of residual stresses, but it can also be used to prepare measurement data for subsequent phase analysis or analysis of preferred orientation. The program provides access to the depth-resolved analysis of residual stresses at different levels of approximation. Furthermore, the graphic representation of the results also serves for the consideration of microstructural and texture related properties. The included material database allows for the quick analysis of the most common materials and is easily extendable. The plots and results produced with EDDIDAT can be exported to graphics and text files.

EDDIDAT, in principle, is designed to analyze diffraction data from various energy-dispersive X-ray sources. Hence it is possible to add new sources and implement the device specific properties into EDDIDAT. If you are interested in this possibility, please contact us.

For any questions and feedback of all kind feel free to contact our EDDIDAT developers, and we will help you as quickly as possible.


EDDIDAT GUI 2 - enlarged view

The EDDIDAT GUI showing the residual stress depth profile of a ferritic steel sample

Installation instructions

The program EDDIDAT is made available for free use (​see license). It is installed by executing the EDDIDAT_Installer.exe (you can download the current version of EDDIDAT here). You will be prompted to install Matlab Runtime. This is necessary in order to be able to use the program. However, Matlab itself is not needed.

You can choose the path to install the program to but be sure you have administrator rights in this folder! If you are not sure that you have full administrator rights it is recommended not to select the drive where Windows is installed (usually C:\). The main folders are found in “YourPath\HZB\EDDIDAT\application\Data”.

During the installation routine you are given the choice to create a desktop shortcut. Unfortunately, the desktop shortcut created does not work since it is missing the proper link to the installation folder (“Start in” is empty). You can change the entry for “Start in” manually (“YourPath\HZB\EDDIDAT\application\”) or you can simply create a new desktop shortcut manually from within the installation directory.



If you use EDDIDAT in any part of your project, you are obliged to cite it in your publications. The primary citation for EDDIDAT is:

  • “EDDIDAT: a graphical user interface for the analysis of energy-dispersive diffraction data” Apel, D. et al. (2020), J. Appl. Cryst.  53, 1130 – 1137, doi: 10.1107/S1600576720005506